Why can I not connect to WIFI since lollipop?

When I attempt to connect to wifi I am told there is no ap connection or the internet is slow. It is not a wifi issues as other phones in the house and computers can connect. It is only an issue with the 2 samsung phones in the home.

Welcome to Android Central! Just because other devices can connect doesn't mean it isn't a router issue. A router reboot can often help. Unplug the router's power for 10 seconds, then plug it back in again and see if that helps. See this guide for other tips: http://forums.androidcentral.com/amb...-problems.html